C72800 Copper-nickel vs. R30008 Cobalt
C72800 copper-nickel belongs to the copper alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is C72800 copper-nickel and the bottom bar is R30008 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 210 |
| Elongation at Break, % | 3.9 to 23 | |
| 1.1 to 73 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 44 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 1270 | |
| 950 to 1700 |
| Tensile Strength: Yield (Proof), MPa | 250 to 1210 | |
| 500 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 320 |
| Melting Completion (Liquidus), °C | 1080 | |
| 1400 |
| Melting Onset (Solidus), °C | 920 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 450 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 38 | |
| 95 |
| Density, g/cm3 | 8.8 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 4.4 | |
| 8.1 |
| Embodied Energy, MJ/kg | 68 | |
| 110 |
| Embodied Water, L/kg | 360 | |
| 400 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 5650 | |
| 590 to 2720 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 40 | |
| 31 to 56 |
| Strength to Weight: Bending, points | 16 to 30 | |
| 25 to 37 |
| Thermal Shock Resistance, points | 19 to 45 | |
| 25 to 44 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.1 | |
| 0 |
| Antimony (Sb), % | 0 to 0.020 | |
| 0 |
| Bismuth (Bi), % | 0 to 0.0010 | |
| 0 |
| Boron (B), % | 0 to 0.0010 | |
| 0 to 0.0010 |
| Carbon (C), % | 0 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 | |
| 18.5 to 21.5 |
| Cobalt (Co), % | 0 | |
| 39 to 42 |
| Copper (Cu), % | 78.3 to 82.8 | |
| 0 |
| Iron (Fe), % | 0 to 0.5 | |
| 7.6 to 20 |
| Lead (Pb), % | 0 to 0.0050 | |
| 0 |
| Magnesium (Mg), % | 0.0050 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0.050 to 0.3 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 6.5 to 7.5 |
| Nickel (Ni), % | 9.5 to 10.5 | |
| 15 to 18 |
| Niobium (Nb), % | 0.1 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.0050 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.050 | |
| 0 to 1.2 |
| Sulfur (S), % | 0 to 0.0025 | |
| 0 to 0.015 |
| Tin (Sn), % | 7.5 to 8.5 | |
| 0 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |